nslookup anywhereintheworld.com
The result will be: ** server can't find anywhereintheworld.com: NXDOMAIN
Which means that domain happens to not exist, so no one received a password reset for your account.You'll have to contact yahoo (however you do that) to get this fixed. Posting here does not count as "contacting yahoo".
Also, take this as a lesson learned. When you let someone else handle your email for you, you live and die at that others whim.